EP2466239B1 - Dispositif de fonte, notamment de métaux - Google Patents

Dispositif de fonte, notamment de métaux Download PDF

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Publication number
EP2466239B1
EP2466239B1 EP12001743.9A EP12001743A EP2466239B1 EP 2466239 B1 EP2466239 B1 EP 2466239B1 EP 12001743 A EP12001743 A EP 12001743A EP 2466239 B1 EP2466239 B1 EP 2466239B1
Authority
EP
European Patent Office
Prior art keywords
crucible
pot
guide plate
cooling
annular gap
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
EP12001743.9A
Other languages
German (de)
English (en)
Other versions
EP2466239A1 (fr
Inventor
Ivaylo Popov
Arno Niebling
Heiko Borhau
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ALD Vacuum Technologies GmbH
Original Assignee
ALD Vacuum Technologies GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ALD Vacuum Technologies GmbH filed Critical ALD Vacuum Technologies GmbH
Publication of EP2466239A1 publication Critical patent/EP2466239A1/fr
Application granted granted Critical
Publication of EP2466239B1 publication Critical patent/EP2466239B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00—Crucible or pot furnaces
    • F27B14/08—Details peculiar to crucible or pot furnaces
    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B35/00—Apparatus not otherwise provided for, specially adapted for the growth, production or after-treatment of single crystals or of a homogeneous polycrystalline material with defined structure
    • C30B35/002—Crucibles or containers
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/04—Refining by applying a vacuum
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/16—Remelting metals
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/16—Remelting metals
    • C22B9/18—Electroslag remelting
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/16—Remelting metals
    • C22B9/20—Arc remelting

Definitions

  • the invention relates to a device for melting in particular of metals with a crucible and a crucible coaxially surrounding hollow cylindrical guide plate, so that between the cylindrical outer wall of the crucible and the inner wall of the guide plate, an annular gap is formed, which serves to guide a cooling fluid, and with a Cooling pot for holding the crucible.
  • Such devices are also referred to as melt stations used in vacuum arc furnaces and electroslag remelters.
  • Such a device is in the DE 1 093 926 c described.
  • the crucible is arranged in a cooling pot, the bottom of which has a central inflow and a laterally arranged outflow for a cooling fluid.
  • the baffle is located between the crucible and the cooling pot, so that the cooling fluid within the baffle on the outside of the crucible, ie in the annular gap between the cylindrical outer wall of the crucible and the inner wall of the baffle, up and outside the baffle on the inside of the cooling pot can flow back.
  • the width of the annular gap can be relatively small and z. B. between 5 and 12 mm. This has the advantage that, because of the small cross-sectional area of the annular gap, only a small amount of cooling fluid is conveyed and thus only little power needs to be applied for this purpose.
  • the device comprises a cooling pot for receiving the crucible, wherein the cooling pot has a cylindrical shell and a bottom and wherein, in a crucible inserted into the crucible of the crucible of the crucible rests on the upper edge of the cooling pot, so that the cooling pot is closed.
  • the cooling pot near the ground has a water inlet nozzle and about, approximately in the central region, a water outlet on.
  • the bottom of the crucible consists of two layers, between which fluid channels are formed, which open into the lateral surface of the crucible and which are in fluid communication with the water inlet nozzle.
  • the invention is based on the object of ensuring further transport of the cooling fluid flowing through the annular gap from below,
  • the invention therefore provides that the baffle with its upper edge bears tightly against a ring which is arranged in the upper region of the crucible and the inner edge of which maintains a distance from the outer wall of the crucible, that the ring below and at a distance to one at the top Edge of the crucible is attached to the molded flange, and that between the baffle and the cooling pot, an intermediate pot is arranged, which carries the coil of an induction heater for the crucible and sealed with its upper edge rests against the ring, and that the ring with openings between his bottom and its top is provided, which open into another annular gap between the baffle and the intermediate pot.
  • the ring is fastened below and at a distance from a flange formed on the upper edge of the crucible.
  • the cooling fluid therefore flows through the ring and over its top to the outside of the baffle.
  • one or more coils are provided, which are supported by an intermediate pot, which is arranged between the baffle and the cooling pot and sealed with its upper edge rests against the ring.
  • the ring closes according to the invention a further annular gap between the baffle and the Eisentupf, so that the majority of the Cooling fluid flows substantially through the first-mentioned annular gap between the baffle and the crucible whose width is optimized in terms of good heat dissipation at the smallest possible flow of the cooling fluid.
  • the ring according to the invention is provided with openings between its underside and its upper side, which open into the further annular gap. The breakthroughs are so small that the flow through the other annular gap is significantly smaller than through the annular gap between baffle and crucible.
  • the bottom of the intermediate pot has an opening through which a tube forming a portion of the fluid connection is passed.
  • the distribution of the cooling fluid flow onto the annular gap and the further annular gap can also be realized with a one-piece guide plate.
  • the invention further provides that the baffle consists of two semi-cylindrical shells, which are detachably connected to each other at their longitudinal edges, and arranged in the annular gap spacers are that determine the width of the annular gap.
  • the inner diameter of the baffle adjusts to the outer diameter of the crucible by either stretching or compressing the material of the shells when the shells are joined together at their longitudinal edges, engaging the spacers supporting the outer wall of the crucible ,
  • the width of the annular gap remains unchanged by the specified size, since it is determined by the dimensions of the spacers.
  • the spacers are attached to the trays.
  • the spacers are formed by short round bars which are arranged parallel to the longitudinal axis of the guide plate, they have only a narrow linear contact with the crucible and the guide plate, so that the heat transport through the spacers remains low.
  • Fig. 1 shows a device according to the invention, hereinafter called melting station.
  • This consists of a crucible 1, which is arranged in a cooling pot 2.
  • the crucible 1 has a flange 3, with which it rests on the upper edge of the cooling pot 2.
  • a cooling fluid for.
  • a water inlet nozzle is provided in the wall of the cooling pot 2 above the ground. This leads into a box 5 arranged on the bottom of the cooling pot 2 and in its center, in which a tube 6 is inserted from above.
  • a water outlet 7 is arranged in the central region of the wall of the cooling pot 2.
  • an intermediate pot 8 which carries a coil, not shown here, an induction heating for the crucible 1.
  • the crucible 1 is further closely surrounded by a hollow cylindrical, consisting of two shells baffle 9. Details of this structure are explained below.
  • FIG. 2 or 4 This shows the Fig. 2 or 4 the upper part of the melting station.
  • Below the flange 3 and at a distance to a ring 10 is bolted to the flange 3.
  • Spacers 11 provide the desired distance.
  • both the baffle 9 and the intermediate pot 8 abut, the shock is sealed in each case.
  • a downwardly projecting web 12 ensures a centering of the intermediate pot 8.
  • the ring 10 is provided with openings 13 in the form of holes which connect a further annular gap 28 between the guide plate 9 and the intermediate pot 8 with the area above the ring 10.
  • the inner diameter of the ring 10 is greater than the outer diameter of the crucible 1, so that there is a gap 14 between the ring 10 and crucible 1.
  • Fig. 3 shows the bottom of the melting station.
  • the bottom 15 of the crucible 1, which is held on this by means of brackets 16, consists of two layers 17a, 17b, between which fluid channels 18 are located. These are in fluid communication with the above-mentioned tube 6, which is connected to the lower layer 16a.
  • the lower end of the guide plate 9 ends in the region of the bottom 15th
  • the bottom 19 of the intermediate pot extends below the bottom 15 of the crucible 1 and rests on the box 5. It has a central opening 20, through which the tube 6 is guided, so that it is able to immerse in the box 5.
  • the Fig. 4 shows a detailed representation in the region of the ring 10.
  • a first seal 21 seals the edge of the guide plate 9 with respect to the ring 10, so that the water flowing upward within the guide plate 9, must pass through the gap 14.
  • a second seal 22 seals the edge of the intermediate pot 8 with respect to the ring 10, so that the water flowing through the further annular gap 28 between baffle 9 and intermediate pot 8 upwards, is passed through the openings 13.
  • Fig. 5 shows a cross section through the melting station. It can be seen that the baffle is divided at a central plane 23 into two shells 24a, 24b, each forming a half hollow cylinder, and which are releasably connected to each other. Between the shells 24a, 24b and the crucible 1, an annular gap 25, the width of which is determined by spacers 26 is formed.
  • the spacers 26 are secured to the inside of the shells 24a, 24b, preferably along their abutting longitudinal edges. These are short rods, which are aligned vertically, that is parallel to the longitudinal axis of the arrangement.
  • a plurality of block-like jaws 27 are welded on the outer sides of the shells 24a, 24b along their abutting longitudinal edges, which are screwed together by screws, not shown here, to hold the shells 24a, 24b together ,
  • the shells 24a, 24b are released from the old crucible and placed around the new crucible 1 and screwed together.
  • the attached to the inside of the shells 24a, 24b spacers 26 attach themselves to the outer wall of the crucible 1, so that the resulting annular gap 25 has the same width as before.
  • the shells are stretched by tightening the screw connection until the longitudinal edges of the shells 24a, 24b abut against each other.
  • the provided with a baffle 9 new crucible 1 is inserted into the cooling pot 2, wherein the already located therein intermediate pot aligns with the ring 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)

Claims (7)

  1. Dispositif de fonte, en particulier de métaux, comportant un creuset (1) et une tôle de chicane en forme de cylindre creux (9) entourant coaxialement le creuset (1) de manière à former entre la paroi extérieure du creuset (1) et la paroi intérieure de la tôle de chicane (9) une fente annulaire (25) qui sert de guide à un fluide de refroidissement et une cuve de refroidissement (2) destinée à recevoir le creuset (1), caractérisé en ce que la tôle de chicane (9) est par son bord supérieur en contact hermétique avec un anneau (10) qui est disposé dans la partie supérieure du creuset (1) et dont le bord intérieur respecte une distance par rapport à la paroi extérieure du creuset (1), que l'anneau (10) est fixé en-dessous et à distance d'une bride (3) formée au niveau du bord supérieur du creuset (1) et que, entre la tôle de chicane (9) et la cuve de refroidissement (2), est disposée une cuve intermédiaire (8) qui supporte la bobine d'un chauffage à induction pour le creuset (1) et qui est en contact hermétique par son bord supérieur avec la bague (10), et que la bague (10) est pourvue entre sa face inférieure et sa face supérieure de percées (13) qui débouchent dans une autre fente annulaire (28) entre la tôle de chicane (9) et la cuve intermédiaire (8).
  2. Dispositif selon la revendication 1, caractérisé en ce que la tôle de chicane (9) est composée de deux coques demi-cylindriques (24a, 24b) qui sont raccordées l'une à l'autre de manière dissociable par leurs arêtes longitudinales et que sont disposés dans la fente annulaire (25) des espaceurs (26) qui déterminent la largeur de la fente annulaire (25).
  3. Dispositif selon la revendication 2, caractérisé en ce que les espaceurs (26) sont fixés aux coques (24a, 24b).
  4. Dispositif selon la revendication 2 ou 3, caractérisé en ce que les espaceurs (26) sont constitués de barreaux courts qui sont disposés parallèlement à l'axe longitudinal de la tôle de chicane (9).
  5. Dispositif selon une des revendications précédentes, caractérisé en ce que la cuve de refroidissement (2) présente une enveloppe cylindrique et un fond (15) et dans lequel, lorsqu'un creuset (1) est inséré dans la cuve de refroidissement (2), la bride (3) du creuset (1) repose sur le bord supérieur de la cuve de refroidissement (2), de sorte que la cuve de refroidissement (2) est fermée, et que la cuve de refroidissement (2) présente près du sol une tubulure d'admission d'eau (4) et par-dessus une tubulure d'évacuation d'eau (7).
  6. Dispositif selon la revendication 5, caractérisé en ce que le fond (15) du creuset (1) est composé de deux épaisseurs (17a, 17b) entre lesquelles sont constitués des canaux à fluide (18) qui débouchent dans la surface d'enveloppe du creuset (1) et qui sont en liaison de fluide avec la tubulure d'admission d'eau (4).
  7. Dispositif selon la revendication 6, caractérisé en ce que le fond (19) de la cuve de refroidissement (2) présente une ouverture (20) à travers laquelle passe un tuyau (6) formant une section de la liaison de fluide.
EP12001743.9A 2008-02-13 2009-02-13 Dispositif de fonte, notamment de métaux Expired - Fee Related EP2466239B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810008993 DE102008008993A1 (de) 2008-02-13 2008-02-13 Vorrichtung zum Schmelzen insbesondere von Metallen
EP20090002029 EP2093530B1 (fr) 2008-02-13 2009-02-13 Dispositif de fonte, notamment de métaux

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP20090002029 Division EP2093530B1 (fr) 2008-02-13 2009-02-13 Dispositif de fonte, notamment de métaux
EP09002029.8 Division 2009-02-13

Publications (2)

Publication Number Publication Date
EP2466239A1 EP2466239A1 (fr) 2012-06-20
EP2466239B1 true EP2466239B1 (fr) 2015-01-07

Family

ID=40612841

Family Applications (2)

Application Number Title Priority Date Filing Date
EP12001743.9A Expired - Fee Related EP2466239B1 (fr) 2008-02-13 2009-02-13 Dispositif de fonte, notamment de métaux
EP20090002029 Active EP2093530B1 (fr) 2008-02-13 2009-02-13 Dispositif de fonte, notamment de métaux

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP20090002029 Active EP2093530B1 (fr) 2008-02-13 2009-02-13 Dispositif de fonte, notamment de métaux

Country Status (2)

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EP (2) EP2466239B1 (fr)
DE (1) DE102008008993A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT12783U1 (de) * 2011-08-05 2012-11-15 Plansee Se Tiegel zur kristallzucht
CN116555571B (zh) * 2023-04-27 2024-05-10 上海开鸿环保科技有限公司 危废污泥电热熔融资源化处理装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1093926B (de) * 1959-08-05 1960-12-01 Heraeus Gmbh W C Einrichtung zur Ablenkung des Lichtbogens in einem Vakuum-Lichtbogenofen
DE2357535B2 (de) * 1973-11-17 1980-06-26 Laszlo Von Dipl.- Phys. 4190 Kleve Koertvelyessy Hochtemperatur- Warmeisolation
US4581745A (en) * 1985-01-16 1986-04-08 Timet Electric arc melting apparatus and associated method

Also Published As

Publication number Publication date
DE102008008993A1 (de) 2009-08-20
EP2093530B1 (fr) 2012-08-08
EP2466239A1 (fr) 2012-06-20
EP2093530A1 (fr) 2009-08-26

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